1221202022 has 8 divisors (see below), whose sum is σ = 1832551176. Its totient is φ = 610351632.

The previous prime is 1221202013. The next prime is 1221202027. The reversal of 1221202022 is 2202021221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1221201988 and 1221202006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221202027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118508 + ... + 128399.

It is an arithmetic number, because the mean of its divisors is an integer number (229068897).

Almost surely, 2^1221202022 is an apocalyptic number.

1221202022 is a deficient number, since it is larger than the sum of its proper divisors (611349154).

1221202022 is a wasteful number, since it uses less digits than its factorization.

1221202022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249382.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1221202022 is about 34945.7010517746. The cubic root of 1221202022 is about 1068.8805428950.

Adding to 1221202022 its reverse (2202021221), we get a palindrome (3423223243).

The spelling of 1221202022 in words is "one billion, two hundred twenty-one million, two hundred two thousand, twenty-two".